Pepsi Center

Refreshing? The Pepsi Center.

City of Denver

10. Denver Nuggets, Pepsi Center. Unveiling an initiative called Play Clean last year, arena officials highlighted an impressive array of eco-steps at the Pepsi Center, which is home to three other teams, including the NHL’s Colorado Avalanche. They’re offsetting energy use, installing solar panels, designating hybrid-only parking spaces and a no-idling zone, promoting recycling, and upgrading water fixtures. “Taking care of the environment is a new adventure in our country,” said Denver Nuggets head coach George Karl. “It will bring everybody together.”